Johan van Nieuwenaar

Johan van Nieuwenaar (1792— ) was a Dutch admiral of the 19th century. He commanded the Netherlands Indies Sea Forces of the Royal Netherlands Navy from 1840. An engineer by profession, he had a reputation for his merciless attitude in battle. Overall Nieuwenaar was regarded as a very competent commander, with the only significant problem being the negative effect of his personality on the morale of his subordinates.